Possible warnings (19)

kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
include/linux/list.h:72:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
fs/ext4/extents.c:5009:23: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
kernel/trace/trace_events.c:2040:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
fs/gfs2/lops.c:564:8: warning: 'off' may be used uninitialized in this function [-Wuninitialized]
include/sound/control.h:218:2: warning: 'speaker_vol' may be used uninitialized in this function [-Wuninitialized]
drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized]
fs/nfsd/nfs4xdr.c:2151:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized]
drivers/base/regmap/regmap.c:2598:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
drivers/base/regmap/regmap.c:1859:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
drivers/gpu/drm/drm_dp_mst_topology.c:5468:9: warning: missing braces around initializer [-Wmissing-braces]
drivers/gpu/drm/drm_dp_mst_topology.c:5468:9: warning: (near initialization for 'desc.ident') [-Wmissing-braces]
fs/io_uring.c:5856:13: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
drivers/usb/core/devio.c:625:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized]
drivers/net/tun.c:1836:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
drivers/net/tun.c:1749:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
net/bridge/br_netlink.c:571:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
net/mac80211/mlme.c:1576:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized]